CN114223044B - 生产烧结磁体的方法 - Google Patents

生产烧结磁体的方法 Download PDF

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Publication number
CN114223044B
CN114223044B CN202080057364.7A CN202080057364A CN114223044B CN 114223044 B CN114223044 B CN 114223044B CN 202080057364 A CN202080057364 A CN 202080057364A CN 114223044 B CN114223044 B CN 114223044B
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sintered magnet
eutectic alloy
magnetic powder
degrees celsius
producing
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CN114223044A (zh
Inventor
金太勋
权纯在
鱼贤洙
崔益赈
催晋赫
金仁圭
申恩贞
成乐宪
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LG Chem Ltd
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LG Chem Ltd
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    • HELECTRICITY
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    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0293Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
    • HELECTRICITY
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    • H01F1/01Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047Alloys characterised by their composition
    • H01F1/053Alloys characterised by their composition containing rare earth metals
    • H01F1/055Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
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    • C22C1/0483Alloys based on the low melting point metals Zn, Pb, Sn, Cd, In or Ga
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    • C22C1/05Mixtures of metal powder with non-metallic powder
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    • H01F1/04Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
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    • H01F1/053Alloys characterised by their composition containing rare earth metals
    • H01F1/055Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
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    • H01F41/0253Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
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CN202080057364.7A 2019-10-07 2020-10-07 生产烧结磁体的方法 Active CN114223044B (zh)

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KR10-2019-0123870 2019-10-07
KR1020190123870A KR102632582B1 (ko) 2019-10-07 2019-10-07 소결 자석의 제조 방법
PCT/KR2020/013643 WO2021071236A1 (ko) 2019-10-07 2020-10-07 소결 자석의 제조 방법

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CN114223044B true CN114223044B (zh) 2024-03-08

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US (1) US20220310292A1 (de)
EP (1) EP4006931B1 (de)
JP (1) JP7309260B2 (de)
KR (1) KR102632582B1 (de)
CN (1) CN114223044B (de)
WO (1) WO2021071236A1 (de)

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
EP4227963A1 (de) * 2022-02-09 2023-08-16 Siemens Aktiengesellschaft Verfahren zur herstellung eines magnetwerkstoffes und magnetwerkstoff

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101944430A (zh) * 2009-07-01 2011-01-12 信越化学工业株式会社 稀土磁体及其制备
CN103779035A (zh) * 2012-10-17 2014-05-07 信越化学工业株式会社 稀土烧结磁体及其制造方法
CN107077940A (zh) * 2014-07-14 2017-08-18 汉阳大学校产学协力团 不含重稀土元素的基于r‑fe‑b的烧结磁体及其制备方法
CN107112125A (zh) * 2015-01-09 2017-08-29 因太金属株式会社 RFeB系烧结磁体的制造方法
KR20180068272A (ko) * 2016-12-12 2018-06-21 기아자동차주식회사 희토류 영구자석 제조방법
KR20190062187A (ko) * 2017-11-28 2019-06-05 주식회사 엘지화학 소결 자석의 제조 방법 및 소결 자석

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3540438B2 (ja) * 1995-05-16 2004-07-07 Tdk株式会社 磁石およびその製造方法
JP2010098115A (ja) * 2008-10-16 2010-04-30 Daido Steel Co Ltd 希土類磁石の製造方法
KR20150033423A (ko) * 2013-09-24 2015-04-01 엘지전자 주식회사 열간가압성형 공정을 이용한 이방성 열간가압성형 자석의 제조방법 및 이 방법으로 제조된 열간가압성형 자석
JP6358572B2 (ja) * 2013-10-24 2018-07-18 国立研究開発法人物質・材料研究機構 希土類磁石の製造方法
JP5915637B2 (ja) * 2013-12-19 2016-05-11 トヨタ自動車株式会社 希土類磁石の製造方法
JP6313202B2 (ja) * 2014-12-26 2018-04-18 トヨタ自動車株式会社 希土類磁石の製造方法
CN106887321B (zh) * 2015-12-16 2019-11-19 北京中科三环高技术股份有限公司 一种提高稀土磁体矫顽力的方法
KR102100759B1 (ko) * 2016-11-08 2020-04-14 주식회사 엘지화학 금속 분말의 제조 방법 및 금속 분말
CN108220732B (zh) 2016-12-22 2019-12-31 有研稀土新材料股份有限公司 合金材料、粘结磁体以及稀土永磁粉的改性方法
JP6815863B2 (ja) * 2016-12-28 2021-01-20 トヨタ自動車株式会社 希土類磁石及びその製造方法
CN107146670A (zh) * 2017-04-19 2017-09-08 安泰科技股份有限公司 一种稀土永磁材料的制备方法
CN111033653B (zh) * 2017-07-05 2022-03-29 Abb瑞士股份有限公司 具有晶间重稀土元素的永磁体及其生产方法
JP6946905B2 (ja) * 2017-09-28 2021-10-13 日立金属株式会社 拡散源
JP6939337B2 (ja) * 2017-09-28 2021-09-22 日立金属株式会社 R−t−b系焼結磁石の製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101944430A (zh) * 2009-07-01 2011-01-12 信越化学工业株式会社 稀土磁体及其制备
CN103779035A (zh) * 2012-10-17 2014-05-07 信越化学工业株式会社 稀土烧结磁体及其制造方法
CN107077940A (zh) * 2014-07-14 2017-08-18 汉阳大学校产学协力团 不含重稀土元素的基于r‑fe‑b的烧结磁体及其制备方法
CN107112125A (zh) * 2015-01-09 2017-08-29 因太金属株式会社 RFeB系烧结磁体的制造方法
KR20180068272A (ko) * 2016-12-12 2018-06-21 기아자동차주식회사 희토류 영구자석 제조방법
KR20190062187A (ko) * 2017-11-28 2019-06-05 주식회사 엘지화학 소결 자석의 제조 방법 및 소결 자석

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EP4006931A1 (de) 2022-06-01
JP2022549995A (ja) 2022-11-30
EP4006931B1 (de) 2023-09-27
WO2021071236A1 (ko) 2021-04-15
JP7309260B2 (ja) 2023-07-18
EP4006931A4 (de) 2022-10-05
US20220310292A1 (en) 2022-09-29
KR20210041315A (ko) 2021-04-15
CN114223044A (zh) 2022-03-22
KR102632582B1 (ko) 2024-01-31

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